﻿/*!
 * Copyright (c), 上海沃恩信息科技有限公司.
 * All rights reserved.
 * Licensed under BSD (https://www.pittypat.work/bsd.html).
 */

using System;
using System.Collections.Generic;

namespace Pittypat.Web
{
    /// <summary>
    /// 预定义的 MIME 类型。
    /// </summary>
    static class Mime
    {
        /// <summary>
        /// 获取指定文件扩展名对应的 MIME 类型字符串。
        /// </summary>
        /// <param name="ext">文件扩展名，使用 '.' 开始。不区分大小写。</param>
        /// <returns>查找预定义的类型，如果没有找到，则返回 application/octet-stream。</returns>
        internal static string Of(string ext)
        {
            var s = "";

            if (Types.TryGetValue(ext ?? "", out s))
            {
                return s;
            }

            return "application/octet-stream";
        }

        // 预定义的 MIME 类型。
        static readonly Dictionary<string, string> Types = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
        {
            { ".323", "text/h323" },
            { ".3g2", "video/3gpp2" },
            { ".3gp2", "video/3gpp2" },
            { ".3gp", "video/3gpp" },
            { ".3gpp", "video/3gpp" },
            { ".aac", "audio/aac" },
            { ".aaf", "audio/aac" },
            { ".aab", "application/x-authoware-bin" },
            { ".aam", "application/x-authoware-map" },
            { ".aas", "application/x-authoware-seg" },
            { ".accdb", "application/msaccess" },
            { ".accde", "application/msaccess" },
            { ".accdt", "application/msaccess" },
            { ".acx", "application/internet-property-stream" },
            { ".adt", "audio/vnd.dlna.adts" },
            { ".adts", "audio/vnd.dlna.adts" },
            { ".afm", "application/octet-stream" },
            { ".ai", "application/postscript" },
            { ".aif", "audio/x-aiff" },
            { ".aifc", "audio/x-aiff" },
            { ".aiff", "audio/x-aiff" },
            { ".als", "audio/X-Alpha5" },
            { ".amc", "application/x-mpeg" },
            { ".ani", "application/octet-stream" },
            { ".apk", "application/vnd.android.package-archive" },
            { ".appcache", "text/cache-manifest" },
            { ".application", "application/x-ms-application" },
            { ".art", "image/x-jg" },
            { ".asc", "text/plain" },
            { ".asd", "application/astound" },
            { ".asf", "video/x-ms-asf" },
            { ".asi", "application/octet-stream" },
            { ".asm", "text/plain" },
            { ".asn", "application/astound" },
            { ".asp", "application/x-asap" },
            { ".asr", "video/x-ms-asf" },
            { ".asx", "video/x-ms-asf" },
            { ".atom", "application/atom+xml" },
            { ".au", "audio/basic" },
            { ".avb", "application/octet-stream" },
            { ".avi", "video/x-msvideo" },
            { ".awb", "audio/amr-wb" },
            { ".axs", "application/olescript" },
            { ".bas", "text/plain" },
            { ".bcpio", "application/x-bcpio" },
            { ".bin ", "application/octet-stream" },
            { ".bld", "application/bld" },
            { ".bld2", "application/bld2" },
            { ".bmp", "image/bmp" },
            { ".bpk", "application/octet-stream" },
            { ".bz2", "application/x-bzip2" },
            { ".c", "text/plain" },
            { ".cab", "application/vnd.ms-cab-compressed" },
            { ".cal", "image/x-cals" },
            { ".calx", "application/vnd.ms-office.calx" },
            { ".cat", "application/vnd.ms-pki.seccat" },
            { ".ccn", "application/x-cnc" },
            { ".cco", "application/x-cocoa" },
            { ".cdf", "application/x-cdf" },
            { ".cer", "application/x-x509-ca-cert" },
            { ".cgi", "magnus-internal/cgi" },
            { ".chat", "application/x-chat" },
            { ".chm", "application/octet-stream" },
            { ".class", "application/x-java-applet" },
            { ".clp", "application/x-msclip" },
            { ".cmx", "image/x-cmx" },
            { ".cnf", "text/plain" },
            { ".co", "application/x-cult3d-object" },
            { ".cod", "image/cis-cod" },
            { ".conf", "text/plain" },
            { ".config", "text/xml" },
            { ".cpio", "application/x-cpio" },
            { ".cpp", "text/plain" },
            { ".cpt", "application/mac-compactpro" },
            { ".crd", "application/x-mscardfile" },
            { ".crl", "application/pkix-crl" },
            { ".crt", "application/x-x509-ca-cert" },
            { ".csh", "application/x-csh" },
            { ".csm", "chemical/x-csml" },
            { ".csml", "chemical/x-csml" },
            { ".css", "text/css" },
            { ".csv", "application/octet-stream" },
            { ".cur", "application/octet-stream" },
            { ".dcm", "x-lml/x-evm" },
            { ".dcr", "application/x-director" },
            { ".dcx", "image/x-dcx" },
            { ".deploy", "application/octet-stream" },
            { ".der", "application/x-x509-ca-cert" },
            { ".dhtml", "text/html" },
            { ".dir", "application/x-director" },
            { ".disco", "text/xml" },
            { ".dll", "application/x-msdownload" },
            { ".dll.config", "text/xml" },
            { ".dlm", "text/dlm" },
            { ".dmg", "application/octet-stream" },
            { ".dms", "application/octet-stream" },
            { ".doc", "application/msword" },
            { ".docm", "application/vnd.ms-word.document.macroEnabled.12" },
            { ".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document" },
            { ".dot", "application/msword" },
            { ".dotm", "application/vnd.ms-word.template.macroEnabled.12" },
            { ".dotx", "application/vnd.openxmlformats-officedocument.wordprocessingml.template" },
            { ".dsp", "application/octet-stream" },
            { ".dtd", "text/xml" },
            { ".dvi", "application/x-dvi" },
            { ".dvi-ms", "video/x-ms-dvr" },
            { ".dwf", "drawing/x-dwf" },
            { ".dwg", "application/x-autocad" },
            { ".dwp", "application/octet-stream" },
            { ".dxf", "application/x-autocad" },
            { ".dxr", "application/x-director" },
            { ".ebk", "application/x-expandedbook" },
            { ".emb", "chemical/x-embl-dl-nucleotide" },
            { ".embl", "chemical/x-embl-dl-nucleotide" },
            { ".eml", "message/rfc822" },
            { ".emz", "application/octet-stream" },
            { ".eot", "application/vnd.ms-fontobject" },
            { ".eps", "application/postscript" },
            { ".epub", "application/epub+zip" },
            { ".eri", "image/x-eri" },
            { ".es", "audio/echospeech" },
            { ".esl", "audio/echospeech" },
            { ".etc", "application/x-earthtime" },
            { ".etx", "text/x-setext" },
            { ".evm", "x-lml/x-evm" },
            { ".evy", "application/envoy" },
            { ".exe", "application/octet-stream" },
            { ".exe.config", "text/xml" },
            { ".fdf", "application/vnd.fdf" },
            { ".fh4", "image/x-freehand" },
            { ".fh5", "image/x-freehand" },
            { ".fhc", "image/x-freehand" },
            { ".fif", "application/fractals" },
            { ".fla", "application/octet-stream" },
            { ".flr", "x-world/x-vrml" },
            { ".flv", "video/x-flv" },
            { ".fm", "application/x-maker" },
            { ".fpx", "image/x-fpx" },
            { ".fvi", "video/isivideo" },
            { ".gau", "chemical/x-gaussian-input" },
            { ".gca", "application/x-gca-compressed" },
            { ".gdb", "x-lml/x-gdb" },
            { ".gif", "image/gif" },
            { ".gps", "application/x-gps" },
            { ".gtar", "application/x-gtar" },
            { ".gz", "application/x-gzip" },
            { ".h", "text/plain" },
            { ".hdf", "application/x-hdf" },
            { ".hdm", "text/x-hdml" },
            { ".hdml", "text/x-hdml" },
            { ".hhc", "application/x-oleobject" },
            { ".hhk", "application/octet-stream" },
            { ".hhp", "application/octet-stream" },
            { ".hlp", "application/winhlp" },
            { ".hqx", "application/mac-binhex40" },
            { ".hta", "application/hta" },
            { ".htc", "text/x-component" },
            { ".htm", "text/html" },
            { ".html", "text/html" },
            { ".hts", "text/html" },
            { ".htt", "text/webviewhtml" },
            { ".hxt", "text/html" },
            { ".ice", "x-conference/x-cooltalk" },
            { ".ico", "image/x-icon" },
            { ".ics", "text/calendar" },
            { ".ief", "image/ief" },
            { ".ifm", "image/gif" },
            { ".ifs", "image/ifs" },
            { ".iii", "application/x-iphone" },
            { ".imy", "audio/melody" },
            { ".inf", "application/octet-stream" },
            { ".ini", "text/plain" },
            { ".ins", "application/x-internet-signup" },
            { ".ips", "application/x-ipscript" },
            { ".ipx", "application/x-ipix" },
            { ".isp", "application/x-internet-signup" },
            { ".it", "audio/x-mod" },
            { ".itz", "audio/x-mod" },
            { ".ivf", "video/x-ivf" },
            { ".ivr", "i-world/i-vrml" },
            { ".j2k", "image/j2k" },
            { ".jad", "text/vnd.sun.j2me.app-descriptor" },
            { ".jam", "application/x-jam" },
            { ".jar", "application/java-archive" },
            { ".java", "text/plain" },
            { ".jck", "application/liquidmotion" },
            { ".jcz", "application/liquidmotion" },
            { ".jfif", "image/pipeg" },
            { ".jnlp", "application/x-java-jnlp-file" },
            { ".jpb", "application/octet-stream" },
            { ".jpe", "image/jpeg" },
            { ".jpeg", "image/jpeg" },
            { ".jpg", "image/jpeg" },
            { ".jpz", "image/jpeg" },
            { ".js", "application/javascript" },
            { ".json", "application/json" },
            { ".jsonld", "application/ld+json" },
            { ".jsx", "text/jscript" },
            { ".jwc", "application/jwc" },
            { ".kjx", "application/x-kjx" },
            { ".lak", "x-lml/x-lak" },
            { ".latex", "application/x-latex" },
            { ".lcc", "application/fastman" },
            { ".lcl", "application/x-digitalloca" },
            { ".lcr", "application/x-digitalloca" },
            { ".less", "text/css" },
            { ".lgh", "application/lgh" },
            { ".lha", "application/octet-stream" },
            { ".lit", "application/x-ms-reader" },
            { ".lml", "x-lml/x-lml" },
            { ".lmlpack", "x-lml/x-lmlpack" },
            { ".log", "text/plain" },
            { ".lpk", "application/octet-stream" },
            { ".lsf", "video/x-la-asf" },
            { ".lsx", "video/x-la-asf" },
            { ".lzh", "application/octet-stream" },
            { ".m13", "application/x-msmediaview" },
            { ".m14", "application/x-msmediaview" },
            { ".m15", "audio/x-mod" },
            { ".m1v", "video/mpeg" },
            { ".m2ts", "video/vnd.dlna.mpeg-tts" },
            { ".m3u", "audio/x-mpegurl" },
            { ".m3url", "audio/x-mpegurl" },
            { ".m4a", "audio/mp4a-latm" },
            { ".m4b", "audio/mp4a-latm" },
            { ".m4p", "audio/mp4a-latm" },
            { ".m4u", "video/vnd.mpegurl" },
            { ".m4v", "video/x-m4v" },
            { ".ma1", "audio/ma1" },
            { ".ma2", "audio/ma2" },
            { ".ma3", "audio/ma3" },
            { ".ma5", "audio/ma5" },
            { ".man", "application/x-troff-man" },
            { ".manifest", "application/x-ms-manifest" },
            { ".map", "magnus-internal/imagemap" },
            { ".mbd", "application/mbedlet" },
            { ".mct", "application/x-mascot" },
            { ".mdb", "application/x-msaccess" },
            { ".mdp", "application/octet-stream" },
            { ".mdz", "audio/x-mod" },
            { ".me", "application/x-troff-me" },
            { ".mel", "text/x-vmel" },
            { ".mht", "message/rfc822" },
            { ".mhtml", "message/rfc822" },
            { ".mi", "application/x-mif" },
            { ".mid", "audio/mid" },
            { ".midi", "audio/midi" },
            { ".mif", "application/x-mif" },
            { ".mil", "image/x-cals" },
            { ".mio", "audio/x-mio" },
            { ".mix", "application/octet-stream" },
            { ".mmf", "application/x-skt-lbs" },
            { ".mng", "video/x-mng" },
            { ".mno", "text/xml" },
            { ".mny", "application/x-msmoney" },
            { ".moc", "application/x-mocha" },
            { ".mocha", "application/x-mocha" },
            { ".mod", "audio/x-mod" },
            { ".mof", "application/x-yumekara" },
            { ".mol", "chemical/x-mdl-molfile" },
            { ".mop", "chemical/x-mopac-input" },
            { ".mov", "video/quicktime" },
            { ".movie", "video/x-sgi-movie" },
            { ".mp2", "video/mpeg" },
            { ".mp3", "audio/mpeg" },
            { ".mp4", "video/mp4" },
            { ".mpa", "video/mpeg" },
            { ".mpc", "application/vnd.mpohun.certificate" },
            { ".mpe", "video/mpeg" },
            { ".mpeg", "video/mpeg" },
            { ".mpg", "video/mpeg" },
            { ".mpg4", "video/mp4" },
            { ".mpga", "audio/mpeg" },
            { ".mpn", "application/vnd.mophun.application" },
            { ".mpp", "application/vnd.ms-project" },
            { ".mps", "application/x-mapserver" },
            { ".mpv2", "video/mpeg" },
            { ".mrl", "text/x-mrml" },
            { ".mrm", "application/x-mrm" },
            { ".ms", "application/x-troff-ms" },
            { ".msg", "application/vnd.ms-outlook" },
            { ".msi", "application/octet-stream" },
            { ".mso", "application/octet-stream" },
            { ".mts", "application/metastream" },
            { ".mtx", "application/metastream" },
            { ".mtz", "application/metastream" },
            { ".mvb", "application/x-msmediaview" },
            { ".mvc", "application/x-miva-compiled" },
            { ".mzv", "application/metastream" },
            { ".nar", "application/zip" },
            { ".nbmp", "image/nbmp" },
            { ".nc", "application/x-netcdf" },
            { ".ndb", "x-lml/x-ndb" },
            { ".ndwn", "application/ndwn" },
            { ".nif", "application/x-nif" },
            { ".nmz", "application/x-scream" },
            { ".nokia-op-logo", "image/vnd.nok-oplogo-color" },
            { ".npx", "application/x-netfpx" },
            { ".nsc", "video/x-ms-asf" },
            { ".nsnd", "audio/nsnd" },
            { ".nva", "application/x-neva1" },
            { ".nws", "message/rfc822" },
            { ".ocx", "application/octet-stream" },
            { ".oda", "application/oda" },
            { ".odc", "text/x-ms-odc" },
            { ".ods", "application/oleobject" },
            { ".oga", "audio/ogg" },
            { ".ogg", "video/ogg" },
            { ".ogv", "video/ogg" },
            { ".one", "application/onenote" },
            { ".onea", "application/onenote" },
            { ".onetoc", "application/onenote" },
            { ".onetoc2", "application/onenote" },
            { ".onetmp", "application/onenote" },
            { ".onepkg", "application/onenote" },
            { ".osdx", "application/opensearchdescription+xml" },
            { ".oom", "application/x-AtlasMate-Plugin" },
            { ".otf", "font/opentype" },
            { ".p10", "application/pkcs10" },
            { ".p12", "application/x-pkcs12" },
            { ".p7b", "application/x-pkcs7-certificates" },
            { ".p7c", "application/x-pkcs7-mime" },
            { ".p7m", "application/x-pkcs7-mime" },
            { ".p7r", "application/x-pkcs7-certreqresp" },
            { ".p7s", "application/x-pkcs7-user_signature_t" },
            { ".pac", "audio/x-pac" },
            { ".pae", "audio/x-epac" },
            { ".pan", "application/x-pan" },
            { ".pbm", "image/x-portable-bitmap" },
            { ".pcx", "image/x-pcx" },
            { ".pcz", "application/octet-stream" },
            { ".pda", "image/x-pda" },
            { ".pdb", "chemical/x-pdb" },
            { ".pdf", "application/pdf" },
            { ".pfb", "application/octet-stream" },
            { ".pfm", "application/octet-stream" },
            { ".pfr", "application/font-tdpfr" },
            { ".pfx", "application/x-pkcs12" },
            { ".pgm", "image/x-portable-graymap" },
            { ".pict", "image/x-pict" },
            { ".pko", "application/ynd.ms-pkipko" },
            { ".pm", "application/x-perl" },
            { ".pma", "application/x-perfmon" },
            { ".pmc", "application/x-perfmon" },
            { ".pmd", "application/x-pmd" },
            { ".pml", "application/x-perfmon" },
            { ".pmr", "application/x-perfmon" },
            { ".pmw", "application/x-perfmon" },
            { ".png", "image/png" },
            { ".pnm", "image/x-portable-anymap" },
            { ".pnz", "image/png" },
            { ".pot", "application/vnd.ms-powerpoint" },
            { ".potm", "application/vnd.ms-powerpoint.template.macroEnabled.12" },
            { ".potx", "application/vnd.openxmlformats-officedocument.presentationml.template" },
            { ".ppam", "application/vnd.ms-powerpoint.addin.macroEnabled.12" },
            { ".ppm", "image/x-portable-pixmap" },
            { ".pps", "application/vnd.ms-powerpoint" },
            { ".ppsm", "application/vnd.ms-powerpoint.slideshow.macroEnabled.12" },
            { ".ppsx", "application/vnd.openxmlformats-officedocument.presentationml.slideshow" },
            { ".ppt", "application/vnd.ms-powerpoint" },
            { ".pptm", "application/vnd.ms-powerpoint.presentation.macroEnabled.12" },
            { ".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation" },
            { ".pqf", "application/x-cprplayer" },
            { ".pqi", "application/cprplayer" },
            { ".prc", "application/x-prc" },
            { ".prf", "application/pics-rules" },
            { ".prm", "application/octet-stream" },
            { ".prop", "text/plain" },
            { ".proxy", "application/x-ns-proxy-autoconfig" },
            { ".prx", "application/octet-stream" },
            { ".ps", "application/postscript" },
            { ".psd", "application/octet-stream" },
            { ".psm", "application/octet-stream" },
            { ".psp", "application/octet-stream" },
            { ".ptlk", "application/listenup" },
            { ".pub", "application/x-mspublisher" },
            { ".pvx", "video/x-pv-pvx" },
            { ".qcp", "audio/vnd.qcelp" },
            { ".qt", "video/quicktime" },
            { ".qti", "image/x-quicktime" },
            { ".qtif", "image/x-quicktime" },
            { ".qtl", "application/x-quicktimeplayer" },
            { ".qxd", "application/octet-stream" },
            { ".r3t", "text/vnd.rn-realtext3d" },
            { ".ra", "audio/x-pn-realaudio" },
            { ".ram", "audio/x-pn-realaudio" },
            { ".rar", "application/octet-stream" },
            { ".ras", "image/x-cmu-raster" },
            { ".rc", "text/plain" },
            { ".rdf", "application/rdf+xml" },
            { ".rf", "image/vnd.rn-realflash" },
            { ".rgb", "image/x-rgb" },
            { ".rlf", "application/x-richlink" },
            { ".rm", "audio/x-pn-realaudio" },
            { ".rmf", "audio/x-rmf" },
            { ".rmi", "audio/mid" },
            { ".rmm", "audio/x-pn-realaudio" },
            { ".rmvb", "audio/x-pn-realaudio" },
            { ".rnx", "application/vnd.rn-realplayer" },
            { ".roff", "application/x-troff" },
            { ".rp", "image/vnd.rn-realpix" },
            { ".rpm", "audio/x-pn-realaudio-plugin" },
            { ".rt", "text/vnd.rn-realtext" },
            { ".rte", "x-lml/x-gps" },
            { ".rtf", "application/rtf" },
            { ".rtg", "application/metastream" },
            { ".rtx", "text/richtext" },
            { ".rv", "video/vnd.rn-realvideo" },
            { ".rwc", "application/x-rogerwilco" },
            { ".s3m", "audio/x-mod" },
            { ".s3z", "audio/x-mod" },
            { ".sca", "application/x-supercard" },
            { ".scd", "application/x-msschedule" },
            { ".sct", "text/scriptlet" },
            { ".sdf", "application/e-score" },
            { ".sea", "application/x-stuffit" },
            { ".setpay", "application/set-payment-initiation" },
            { ".setreg", "application/set-registration-initiation" },
            { ".sgm", "text/sgml" },
            { ".sgml", "text/sgml" },
            { ".sh", "application/x-sh" },
            { ".shar", "application/x-shar" },
            { ".shtml", "magnus-internal/parsed-html" },
            { ".shw", "application/presentations" },
            { ".si6", "image/si6" },
            { ".si7", "image/vnd.stiwap.sis" },
            { ".si9", "image/vnd.lgtwap.sis" },
            { ".sis", "application/vnd.symbian.install" },
            { ".sit", "application/x-stuffit" },
            { ".skd", "application/x-Koan" },
            { ".skm", "application/x-Koan" },
            { ".skp", "application/x-Koan" },
            { ".skt", "application/x-Koan" },
            { ".slc", "application/x-salsa" },
            { ".smd", "audio/x-smd" },
            { ".smi", "application/smil" },
            { ".smil", "application/smil" },
            { ".smp", "application/studiom" },
            { ".smz", "audio/x-smd" },
            { ".snd", "audio/basic" },
            { ".spc", "application/x-pkcs7-certificates" },
            { ".spl", "application/futuresplash" },
            { ".spr", "application/x-sprite" },
            { ".sprite", "application/x-sprite" },
            { ".sdp", "application/sdp" },
            { ".spt", "application/x-spt" },
            { ".src", "application/x-wais-source" },
            { ".sst", "application/vnd.ms-pkicertstore" },
            { ".stk", "application/hyperstudio" },
            { ".stl", "application/vnd.ms-pkistl" },
            { ".stm", "text/html" },
            { ".sv4cpio", "application/x-sv4cpio" },
            { ".sv4crc", "application/x-sv4crc" },
            { ".svf", "image/vnd" },
            { ".svg", "image/svg+xml" },
            { ".svgz", "image/svg+xml" },
            { ".svh", "image/svh" },
            { ".svr", "x-world/x-svr" },
            { ".swf", "application/x-shockwave-flash" },
            { ".swfl", "application/x-shockwave-flash" },
            { ".t", "application/x-troff" },
            { ".tad", "application/octet-stream" },
            { ".talk", "text/x-speech" },
            { ".tar", "application/x-tar" },
            { ".taz", "application/x-tar" },
            { ".tbp", "application/x-timbuktu" },
            { ".tbt", "application/x-timbuktu" },
            { ".tcl", "application/x-tcl" },
            { ".tex", "application/x-tex" },
            { ".texi", "application/x-texinfo" },
            { ".texinfo", "application/x-texinfo" },
            { ".tgz", "application/x-compressed" },
            { ".thm", "application/vnd.eri.thm" },
            { ".thmx", "application/vnd.ms-officetheme" },
            { ".thn", "application/octet-stream" },
            { ".tif", "image/tiff" },
            { ".tiff", "image/tiff" },
            { ".tki", "application/x-tkined" },
            { ".tkined", "application/x-tkined" },
            { ".toc", "application/toc" },
            { ".toy", "image/toy" },
            { ".tr", "application/x-troff" },
            { ".trk", "x-lml/x-gps" },
            { ".trm", "application/x-msterminal" },
            { ".ts", "video/vnd.dlna.mpeg-tts" },
            { ".tsi", "audio/tsplayer" },
            { ".tsp", "application/dsptype" },
            { ".tsv", "text/tab-separated-values" },
            { ".ttf", "font/ttf" },
            { ".tts", "video/vnd.dlna.mpeg-tts" },
            { ".ttz", "application/t-time" },
            { ".txt", "text/plain" },
            { ".u32", "application/octet-stream" },
            { ".uls", "text/iuls" },
            { ".ult", "audio/x-mod" },
            { ".ustar", "application/x-ustar" },
            { ".uu", "application/x-uuencode" },
            { ".uue", "application/x-uuencode" },
            { ".vbs", "text/vbscript" },
            { ".vcd", "application/x-cdlink" },
            { ".vcf", "text/x-vcard" },
            { ".vcs", "text/plain" },
            { ".vdo", "video/vdo" },
            { ".vdx", "application/vnd.ms-visio.viewer" },
            { ".vib", "audio/vib" },
            { ".viv", "video/vivo" },
            { ".vivo", "video/vivo" },
            { ".vmd", "application/vocaltec-media-desc" },
            { ".vmf", "application/vocaltec-media-file" },
            { ".vmi", "application/x-dreamcast-vms-info" },
            { ".vml", "text/xml" },
            { ".vms", "application/x-dreamcast-vms" },
            { ".vox", "audio/voxware" },
            { ".vqe", "audio/x-twinvq-plugin" },
            { ".vqf", "audio/x-twinvq" },
            { ".vql", "audio/x-twinvq" },
            { ".vre", "x-world/x-vream" },
            { ".vrml", "x-world/x-vrml" },
            { ".vrt", "x-world/x-vrt" },
            { ".vrw", "x-world/x-vream" },
            { ".vsd", "application/vnd.visio" },
            { ".vss", "application/vnd.visio" },
            { ".vst", "application/vnd.visio" },
            { ".vsto", "application/x-ms-vsto" },
            { ".vsw", "application/vnd.visio" },
            { ".vsx", "application/vnd.visio" },
            { ".vts", "workbook/formulaone" },
            { ".vtx", "application/vnd.visio" },
            { ".wav", "audio/x-wav" },
            { ".wax", "audio/x-ms-wax" },
            { ".wbmp", "image/vnd.wap.wbmp" },
            { ".wcm", "application/vnd.ms-works" },
            { ".wdb", "application/vnd.ms-works" },
            { ".web", "application/vnd.xara" },
            { ".webm", "video/webm" },
            { ".wi", "image/wavelet" },
            { ".wis", "application/x-InstallShield" },
            { ".wks", "application/vnd.ms-works" },
            { ".wm", "video/x-ms-wm" },
            { ".wma", "audio/x-ms-wma" },
            { ".wmd", "application/x-ms-wmd" },
            { ".wmf", "application/x-msmetafile" },
            { ".wml", "text/vnd.wap.wml" },
            { ".wmlc", "application/vnd.wap.wmlc" },
            { ".wmls", "text/vnd.wap.wmlscript" },
            { ".wmlsc", "application/vnd.wap.wmlscriptc" },
            { ".wmlscript", "text/vnd.wap.wmlscript" },
            { ".wmp", "video/x-ms-wmp" },
            { ".wmv", "video/x-ms-wmv" },
            { ".wmx", "video/x-ms-wmx" },
            { ".wmz", "application/x-ms-wmz" },
            { ".woff", "font/x-woff" },
            { ".woff2", "application/font-woff2" },
            { ".wpng", "image/x-up-wpng" },
            { ".wps", "application/vnd.ms-works" },
            { ".wpt", "x-lml/x-gps" },
            { ".wri", "application/x-mswrite" },
            { ".wrl", "x-world/x-vrml" },
            { ".wrz", "x-world/x-vrml" },
            { ".ws", "text/vnd.wap.wmlscript" },
            { ".wsc", "application/vnd.wap.wmlscriptc" },
            { ".wsdl", "text/xml" },
            { ".wtv", "video/x-ms-wtv" },
            { ".wv", "video/wavelet" },
            { ".wvx", "video/x-ms-wvx" },
            { ".wxl", "application/x-wxl" },
            { ".x", "application/directx" },
            { ".x-gzip", "application/x-gzip" },
            { ".xaf", "x-world/x-vrml" },
            { ".xaml", "application/xaml+xml" },
            { ".xap", "application/x-silverlight-app" },
            { ".xar", "application/vnd.xara" },
            { ".xbap", "application/x-ms-xbap" },
            { ".xbm", "image/x-xbitmap" },
            { ".xdm", "application/x-xdma" },
            { ".xdma", "application/x-xdma" },
            { ".xdr", "text/plain" },
            { ".xdw", "application/vnd.fujixerox.docuworks" },
            { ".xht", "application/xhtml+xml" },
            { ".xhtm", "application/xhtml+xml" },
            { ".xhtml", "application/xhtml+xml" },
            { ".xla", "application/vnd.ms-excel" },
            { ".xlam", "application/vnd.ms-excel.addin.macroEnabled.12" },
            { ".xlc", "application/vnd.ms-excel" },
            { ".xll", "application/x-excel" },
            { ".xlm", "application/vnd.ms-excel" },
            { ".xls", "application/vnd.ms-excel" },
            { ".xlsb", "application/vnd.ms-excel.sheet.binary.macroEnabled.12" },
            { ".xlsm", "application/vnd.ms-excel.sheet.macroEnabled.12" },
            { ".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" },
            { ".xlt", "application/vnd.ms-excel" },
            { ".xltm", "application/vnd.ms-excel.template.macroEnabled.12" },
            { ".xltx", "application/vnd.openxmlformats-officedocument.spreadsheetml.template" },
            { ".xlw", "application/vnd.ms-excel" },
            { ".xm", "audio/x-mod" },
            { ".xml", "text/plain" },
            { ".xmz", "audio/x-mod" },
            { ".xof", "x-world/x-vrml" },
            { ".xpi", "application/x-xpinstall" },
            { ".xpm", "image/x-xpixmap" },
            { ".xps", "application/vnd.ms-xpsdocument" },
            { ".xsd", "text/xml" },
            { ".xsf", "text/xml" },
            { ".xsl", "text/xml" },
            { ".xslt", "text/xml" },
            { ".xsn", "application/octet-stream" },
            { ".xtp", "application/octet-stream" },
            { ".xul", "text/xul" },
            { ".xwd", "image/x-xwindowdump" },
            { ".xyz", "chemical/x-pdb" },
            { ".yz1", "application/x-yz1" },
            { ".z", "application/x-compress" },
            { ".zac", "application/x-zaurus-zac" },
            { ".zip", "application/x-zip-compressed" }
        };
    }
}
